I'm trying to embed an interactive graph, which is saved as an html file, in a reStructuredText document using iframe:
.. raw:: html
    <iframe src="filename.html" height="345px" width="100%"></iframe>
The html file is in the same directory as my .rst file, but the graph does not display, and I'm getting a file could not be found error.
However, if I paste the external html file in the _build/html directory, the graph displays fine. How do I properly embed this html file, so that the graph is embedded automatically when I make html?